MSC-125 and MSC-160 Manifolds for Steam Distribution and

Local regulations may restrict the use of this product to below the conditions quoted. In the interests of development and improvement of the product, we reserve the right to change the specification without notice. © Copyright 2020

Page 1 of 6

MSC-125 and MSC-160 Manifolds for Steam Distribution and Condensate Collection.

DescriptionA range of forged carbon steel compact manifolds with integral piston type stop valves for steam distribution and condensate collection duty.MSC manifolds can be used for either steam distribution duty or condensate collection duty depending on the way they are installed.

OperationIn operation the piston valve should be either fully open or fully closed: It is not intended for throttling duties.As the piston valve has such a large sealing area it is not necessary to use a valve key to ensure dead tight shut-off. Please note that manifolds without piston valves fitted are also available.

StandardsThis product fully complies with the requirements of the European Pressure Equipment Directive (PED).

CertificationThe product is available with certification to EN 10204 3.1.Note: All certification / inspection requirements must be stated at the time of order placement.

Available types, sizes and pipe connectionsMSC manifolds are available with 4, 8 or 12 connections, with and without integral piston isolation valves designated:

MSC04-125, MSC08-125 and MSC12-125 with 125mm pitch respectively DN15 and DN20 screwed BSP, NPT or socket weld to B16.11 Class 3000 tracer ports are available as standard.

MSC04-160, MSC08-160 and MSC12-160 with 160mm pitch respectively DN15 and DN20 screwed BSP, NPT or socket weld to B16.11 Class 3000 tracer ports are available as standard.

The steam main / condensate return connection is DN40 socket weld to ASME B 16.11 as standard.

Alternative connections, including flanged, are available on request.

Optional extrasThe following are available at extra cost:

- Mounting kit comprising of studs, spacers and nuts.

- Insulating jacket.

- Fitted with steam traps for quick installation projects.

MSC04-160 shown having socket weld connections

Flow direction when used for condensate collection duty

Flow direction when used for steam

distribution duty

Recommended alternatives

TI-P117-40 CMGT Issue 3


Page 2 of 6

MSC-125 and MSC-160 Manifolds for Steam Distribution and Condensate Collection

0

0 10 2019.6

30 40 5051

-46

100

200

300

400425

Pressure bar g

Tem

pera

ture

°C

C B

Steam saturation curve

The product must not be used in this region.

A - B Flanged ASME Class 300, screwed and socket weld.

A - C Flanged ASME Class 150.

Body design conditions ASME B16.5 Class 300

PMA Maximum allowable pressure 51 bar g @ 38 °C

TMA Maximum allowable temperature 425 °C @ 28 bar g

Minimum allowable temperature -46 °C

PMO Maximum operating pressure for saturated steam serviceASME 150 14 bar g

ASME 300, SW, NPT and BSP 41.5 bar g

TMO Maximum operating temperatureASME 150 425 °C @ 5.5 bar g

ASME 300, SW, NPT and BSP 425 °C @ 28 bar g

Minimum operating temperatureNote: For lower operating temperatures consult Spirax Sarco 0 °C

Designed for a maximum cold hydraulic test pressure of 76 bar g

Kv valuesAll sizes Kv 1.8

For conversion:Cv (UK) = Kv x 0.963Cv (US) = Kv x 1.156

The Kv stated is for each valve rather than the complete manifold.

Pressure / temperature limits

A

Page 3 of 6



MaterialsNo. Part Material

1 Body Carbon steel ASTM A105N / LF2

2 Bonnet Carbon steel (Zinc plated) ASTM A105N/LF2

3 Studs Steel (plated) ASTM A193 B7

4 Nuts Steel (plated) ASTM A194 2H

5 Washers Stainless steel

6 Piston Stainless steel AISI 410 : 1.4006

7 Lantern bush Stainless steel ASTM A276 : AISI 431

11

10

11

MSC04-160 shown having socket weld connections

Flow direction when used for condensate collection dutyFlow direction when used for steam distribution duty

Recommended alternatives

1

3

9 67 8

5

4

No. Part Material

8 Upper ring Graphite and stainless steel

9 Lower ring Graphite and stainless steel

10 Handwheel Carbon steel (Zinc plated) EN 10213 : 1.0619N

11 Handwheel nuts Stainless steel

12 Nitronic 60 washer Stainless steel

13 Nameplates Stainless steel

Note : There is one nameplate on the handwheel and two on the body, though not shown on the illustration.

2

12

12

13


Page 4 of 6


MSC08-160 and 125MSC04-160 and 125 MSC12-160 and 125

Dimensions/weights (approximate) in mm and kg

160 mm pitch versionType A B C D E F G H J K L M N Weight

MSC04-160 325

160 82.5 110 71 48 37.5 75 102 120 50 M12 45

10

MSC08-160 645 20

MSC12-160 970 30

125 mm pitch versionType A B C D E F G H J K L M N Weight

MSC04-125 255

125 65 110 71 48 37.5 75 102 120 50 M12 45

9

MSC08-125 505 18

MSC12-125 755 26

C

AB

M

M

C

B

M

M

C

C

A

B

M

M

B

M

M

C

AB

M

M

C

B

M

M

MD

F

LE

N Open

GClosed

K Open

J Closed

H

B B

B

Page 5 of 6



Safety information, installation and maintenanceFor full details see the Installation and Maintenance Instructions (IM-P117-03) supplied with the product. GeneralThese manifolds have been designed for vertical installation. The back is provided with threaded connections M12 for ease of installation by attaching to a supporting structure.

Installation view from above

Mounting kitsThe manifold is generally conveniently attached to the structural steelwork supporting the plant.For ease of insulation it is recommended that spacers are fitted to give the manifold a stand-off of at least 50 mm.For convenience the following sets of mounting kit are available:

- A single set comprising 2 off each stud, nut and spacer suitable for installing one MSC04-160 or MSC08-160.

- A single set comprising 4 off each stud, nut and spacer suitable for installing one MSC12-160.

- A multiple set comprising 12 off each stud, nut and spacer suitable for installing 6 x MSC04-160, 6 x MSC08-160 or 3 x MSC12-160.

After installation it is recommended that the manifold is insulated to minimise radiated heat losses and to protect personnel from burn risks. This is most easily done using the optional insulating jacket. Steam distribution dutyThe recommended installation is with the steam inlet connection at the top of the manifold. A trap set should be fitted to the bottom. The discharge from this trap set should ideally be returned. If it is to be discharged to atmosphere we recommend that a diffuser is fitted. Condensate collection dutyThe recommended installation is with the condensate outlet at the top. The bottom of the manifold should be fitted with a stop valve for blowdown purposes. Again, we recommend that a diffuser is fitted.

How to orderExample: 1 off Spirax Sarco MSC08-125 steam distribution and condensate collection manifold, with 125mm pitch, Dual Certified ASTM A105N / A350LF2 forged carbon steel body with integral piston valves having 8 x DN20 socket weld connections to ASME B 16.11 Class 3000. Complete with EN 10204 3.1 certification as standard for the body and bonnet.

MSC manifold

M12 studM12 Nut

Structural steelwork

Spacer

50 mm

10

4


Page 6 of 6


Spare partsThe spare parts available are detailed below. For ease of replacement an extractor tool is available for removing the sealing rings.

Available spares

Sealing ring set 8 and 9

Piston valve assembly 2, 4, 5, 6, 7, 8, 9, 10, 11 and 12

Piston valve sub-assembly 6, 7, 8 and 9

Extractor tool See below

Mounting kit(See page 5)

- A single set comprising 2 off each stud, nut and spacer suitable for installing one MSC04-160 or MSC08-160.

- A single set comprising 4 off each stud, nut and spacer suitable for installing one MSC12-160.

- A multiple set comprising 12 off each stud, nut and spacer suitable for installing 6 x MSC04-160, 6 x MSC08-160 or 3 x MSC12-160.

How to order sparesAlways order spares by using the description given in the column headed 'Available spares' and state the type and size of manifold.

Example: 1 off Sealing ring set for an integral piston valve on a carbon steel manifold MSC04-125 DN15 socket weld.

Table 1 Recommended tightening torques

Itemor

mmN m lbf ft

4 14 " x 18 UNC 12 8.9

11 10 M6 12 8.9

1

6 2 7

3 + 4 + 5

10

8 9

12Washer

Top nut

Domed lock-nut 11

12Washer

Extractor tool

Documents

MSC-125 and MSC-160 Manifolds for Steam Distribution and